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Contents
Issue 7 May 1998 ix
called party number 3-53
call_id 3-53
party_id 3-53
Trunk group/trunk group member 3-53
Use of Event Reports in Associations 3-54
■ Event Reporting for Merging Two Calls 3-55
Rules for Merging Two Calls with UUI Information 3-58
Transfer and Conference Interactions 3-59
■ U-ABORT 3-60
Information Flow 3-60
U-Abort Parameters 3-60
4 ASAI and Call Control 4-1
■ Third Party Make Call 4-4
Information Flow 4-4
Third Party Make Call Parameters 4-4
ACK (Positive Acknowledgement) Parameters 4-5
Denial (NAK) Causes 4-6
Protocol Error (NAK) Causes 4-7
Considerations 4-7
■ Third Party Make Call and Supported Call Types 4-8
1. Switch-Classified Call 4-8
Call Parameters for Switch-Classified Calls 4-9
Call Classification 4-12
Answer Classification 4-13
Drop Classification 4-14
No Answer Condition 4-14
Busy Condition 4-15
Reorder Condition 4-15
Other Conditions 4-15
ECS-Terminated Call Conditions
Prior to Classification 4-15
ECS Operation for Switch-Classified Call Setup 4-16
Switch-Classified Call Originator 4-17
Switch-Classified Call Destination 4-18
Negative Acknowledgement (NAK) of a
Switch-Classified Call 4-18